xref: /sqlite-3.40.0/test/whereK.test (revision 8210233c) 
1# 2015-03-16
2#
3# The author disclaims copyright to this source code.  In place of
4# a legal notice, here is a blessing:
5#
6#    May you do good and not evil.
7#    May you find forgiveness for yourself and forgive others.
8#    May you share freely, never taking more than you give.
9#
10#***********************************************************************
11# This file implements regression tests for SQLite library.  The
12# focus of this file is testing OR expressions where terms can be
13# factored from either side of the OR and combined into a single new
14# AND term that is beneficial to the search.  Examples:
15#
16#      (x>A OR x=A)              -->    ... AND (x>=A)
17#      (x>A OR (x=A AND y>=B)    -->    ... AND (x>=A)
18#
19
20
21
22set testdir [file dirname $argv0]
23source $testdir/tester.tcl
24set ::testprefix whereK
25
26do_execsql_test 1.1 {
27  CREATE TABLE t1(a,b,c);
28  WITH RECURSIVE c(x) AS (VALUES(0) UNION ALL SELECT x+1 FROM c WHERE x<99)
29    INSERT INTO t1(a,b,c) SELECT x, x/10, x%10 FROM c;
30  CREATE INDEX t1bc ON t1(b,c);
31  SELECT a FROM t1 WHERE b>9 OR b=9 ORDER BY +a;
32} {90 91 92 93 94 95 96 97 98 99}
33do_execsql_test 1.1eqp {
34  EXPLAIN QUERY PLAN
35  SELECT a FROM t1 WHERE b>9 OR b=9 ORDER BY +a;
36} {/SEARCH t1 USING INDEX t1bc/}
37
38do_execsql_test 1.2 {
39  SELECT a FROM t1 WHERE b>8 OR (b=8 AND c>7) ORDER BY +a;
40} {88 89 90 91 92 93 94 95 96 97 98 99}
41do_execsql_test 1.2eqp {
42  EXPLAIN QUERY PLAN
43  SELECT a FROM t1 WHERE b>8 OR (b=8 AND c>7) ORDER BY +a;
44} {/SEARCH t1 USING INDEX t1bc/}
45
46do_execsql_test 1.3 {
47  SELECT a FROM t1 WHERE (b=8 AND c>7) OR b>8 ORDER BY +a;
48} {88 89 90 91 92 93 94 95 96 97 98 99}
49do_execsql_test 1.3eqp {
50  EXPLAIN QUERY PLAN
51  SELECT a FROM t1 WHERE (b=8 AND c>7) OR b>8 ORDER BY +a;
52} {/SEARCH t1 USING INDEX t1bc/}
53
54do_execsql_test 1.4 {
55  SELECT a FROM t1 WHERE (b=8 AND c>7) OR 8<b ORDER BY +a;
56} {88 89 90 91 92 93 94 95 96 97 98 99}
57do_execsql_test 1.4eqp {
58  EXPLAIN QUERY PLAN
59  SELECT a FROM t1 WHERE (b=8 AND c>7) OR 8<b ORDER BY +a;
60} {/SEARCH t1 USING INDEX t1bc/}
61
62do_execsql_test 1.5 {
63  SELECT a FROM t1 WHERE (b=8 AND c>7) OR (b>8 AND c NOT IN (4,5,6))
64   ORDER BY +a;
65} {88 89 90 91 92 93 97 98 99}
66do_execsql_test 1.5eqp {
67  EXPLAIN QUERY PLAN
68  SELECT a FROM t1 WHERE (b=8 AND c>7) OR (b>8 AND c NOT IN (4,5,6))
69   ORDER BY +a;
70} {/SEARCH t1 USING INDEX t1bc/}
71
72finish_test
73